Remove tons of OILPAN.

sky/engine/core/dom/custom/CustomElementMicrotaskImportStep.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 69 matching lines @@
 CustomElementMicrotaskStep::Result CustomElementMicrotaskImportStep::process()
 {
     m_queue->dispatch();
     if (!m_queue->isEmpty() || shouldWaitForImport())
         return Processing;
 
     didUpgradeAllCustomElements();
     return FinishedProcessing;
 }
 
-void CustomElementMicrotaskImportStep::trace(Visitor* visitor)
-{
-    visitor->trace(m_import);
-    visitor->trace(m_queue);
-    CustomElementMicrotaskStep::trace(visitor);
-}
-
 } // namespace blink